Air compressor base assembly



FIG. 1 is a perspective view taken from the top, front and right side of an air compressor base assembly embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a left side elevational view thereof.

The broken line representations in FIG. 2 of holes for an engine shaft and fuel line and in FIG. 3 of an engine and intake structures are for the purpose of illustration only and form no part of the claimed design. 

The ornamental design for an air compressor base assembly, as shown and described. 